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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright 2013-2016 Freescale Semiconductor Inc.
* Copyright 2016-2018 NXP
*/
#include <linux/fsl/mc.h>
#include "dprtc.h"
#include "dprtc-cmd.h"
/**
* dprtc_open() - Open a control session for the specified object.
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @dprtc_id: DPRTC unique ID
* @token: Returned token; use in subsequent API calls
*
* This function can be used to open a control session for an
* already created object; an object may have been declared in
* the DPL or by calling the dprtc_create function.
* This function returns a unique authentication token,
* associated with the specific object ID and the specific MC
* portal; this token must be used in all subsequent commands for
* this specific object
*
* Return: '0' on Success; Error code otherwise.
*/
int dprtc_open(struct fsl_mc_io *mc_io,
u32 cmd_flags,
int dprtc_id,
u16 *token)
{
struct dprtc_cmd_open *cmd_params;
struct fsl_mc_command cmd = { 0 };
int err;
cmd.header = mc_encode_cmd_header(DPRTC_CMDID_OPEN,
cmd_flags,
0);
cmd_params = (struct dprtc_cmd_open *)cmd.params;
cmd_params->dprtc_id = cpu_to_le32(dprtc_id);
err = mc_send_command(mc_io, &cmd);
if (err)
return err;
*token = mc_cmd_hdr_read_token(&cmd);
return 0;
}
/**
* dprtc_close() - Close the control session of the object
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @token: Token of DPRTC object
*
* After this function is called, no further operations are
* allowed on the object without opening a new control session.
*
* Return: '0' on Success; Error code otherwise.
*/
int dprtc_close(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token)
{
struct fsl_mc_command cmd = { 0 };
cmd.header = mc_encode_cmd_header(DPRTC_CMDID_CLOSE, cmd_flags,
token);
return mc_send_command(mc_io, &cmd);
}
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